SVC和TCSC电磁暂态快速仿真新方法
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国家重点实验室开放基金(SKLHVDC2019KF20)


A new method of fast simulation for electromagnetic transients of SVC and TCSC
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    摘要:

    在传统电磁暂态仿真中,静止无功补偿器(SVC)和晶闸管控制串联电容器(TCSC)的求解速度较慢。为克服这一不足,提出一种快速模拟SVC和TCSC电磁暂态过程的新方法。首先,根据晶闸管控制电抗器(TCR)支路通、断状态不变时SVC和TCSC的状态方程不变这一特点,建立分时段不变状态方程;通过引入辅助变量,将模型由非齐次转化为齐次线性方程组,得到各工况下统一的表达式。然后,采用缩放平方法计算矩阵指数,得到模型的输出响应。最后,与传统电磁暂态仿真软件PSCAD/EMTDC的计算结果进行对比,验证所提方法的合理性和高效性。

    Abstract:

    In the traditional electromagnetic transient simulation, the computation speed of SVC (Static Var Compensator) and TCSC (Thyristor Controlled Series Compensation) is relatively slower. In order to overcome this deficiency, a new method of fast simulation for the electromagnetic transients of SVC and TCSC is proposed. For the fact that the state equations of SVC and TCSC are unchanged when the state of TCR (Thyristor Controlled Reactor) branches stay the same, the piecewise timeinvariant state equations of SVC and TCSC are developed firstly. Then, auxiliary variables are introduced and the model is transformed from a set of nonhomogeneous linear equations into homogeneous ones to obtain the unified expression suitable for varied working conditions. Finally, the scaling and squaring method is utilized to compute the matrix exponent and the response of the model is obtained. The feasibility and high efficiency of the proposed method is verified by comparing with the results from classical electromagnetic transient simulations using the PSCAD/EMTDC software package.

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徐圣扬,毛晓明,麦立昀. SVC和TCSC电磁暂态快速仿真新方法[J].电力科学与技术学报,2020,35(4):66-75. XU Shengyang, MAO Xiaoming, MAI Liyun. A new method of fast simulation for electromagnetic transients of SVC and TCSC[J]. JOURNAL OF EIECTRIC POWER SCIENCE AND TECHNOLOGY,2020,35(4):66-75.

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  • 在线发布日期: 2020-09-04